// Copyright © SixtyFPS GmbH <info@sixtyfps.io>
// SPDX-License-Identifier: (GPL-3.0-only OR LicenseRef-SixtyFPS-commercial)

Xxx := Rectangle {

    foo := Rectangle {
        callback hello(int) -> int;
    }

    callback bar(int) -> int;
    bar <=> foo.hello;
//  ^error{Unknown property bar in Rectangle}
}